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x86 PAT: change track_pfn_vma_new to take pgprot_t pointer param

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Impact: cleanup

Change the protection parameter for track_pfn_vma_new() into a pgprot_t pointer.
Subsequent patch changes the x86 PAT handling to return a compatible
memtype in pgprot_t, if what was requested cannot be allowed due to conflicts.
No fuctionality change in this patch.

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
venkatesh.pallipadi@intel.com
2009-01-09 16:13:11 -08:00
committed by Ingo Molnar
parent afc7d20c84
commit e4b866ed19
3 changed files with 9 additions and 8 deletions
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6
arch/x86/mm/pat.c
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@ -741,7 +741,7 @@ cleanup_ret:
* Note that this function can be called with caller trying to map only a
* subrange/page inside the vma.
*/
int track_pfn_vma_new(struct vm_area_struct *vma, pgprot_t prot,
int track_pfn_vma_new(struct vm_area_struct *vma, pgprot_t *prot,
unsigned long pfn, unsigned long size)
{
int retval = 0;
@ -758,14 +758,14 @@ int track_pfn_vma_new(struct vm_area_struct *vma, pgprot_t prot,
if (is_linear_pfn_mapping(vma)) {
/* reserve the whole chunk starting from vm_pgoff */
paddr = (resource_size_t)vma->vm_pgoff << PAGE_SHIFT;
return reserve_pfn_range(paddr, vma_size, prot);
return reserve_pfn_range(paddr, vma_size, *prot);
}
/* reserve page by page using pfn and size */
base_paddr = (resource_size_t)pfn << PAGE_SHIFT;
for (i = 0; i < size; i += PAGE_SIZE) {
paddr = base_paddr + i;
retval = reserve_pfn_range(paddr, PAGE_SIZE, prot);
retval = reserve_pfn_range(paddr, PAGE_SIZE, *prot);
if (retval)
goto cleanup_ret;
}